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@article{JRAM_1987__382_152987, author = {B. Drachman and S.A.van Gils}, title = {Abelian integrals for quadratic vector fields.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {165--180}, publisher = {mathdoc}, volume = {382}, year = {1987}, zbl = {0621.58033}, url = {http://geodesic.mathdoc.fr/item/JRAM_1987__382_152987/} }
B. Drachman; S.A.van Gils. Abelian integrals for quadratic vector fields.. Journal für die reine und angewandte Mathematik, Tome 382 (1987), pp. 165-180. http://geodesic.mathdoc.fr/item/JRAM_1987__382_152987/